If you go to quiet-tune.com and select the " decibel tests" button, you will find the following information:

" After much research, we found a test that was done on the hearing range of the whitetail deer. This study was conducted at the College of Veterinary Medicine at Texas A&M University by Dr. Ken L. Risenhoover, Dr. Jon Hunter, Roy Jacobson, and Glenn Stout. Their test results showed that the whitetail deer has a peak hearing range of one (1) to eight (8) kilohertz in the forty (40) to eighty (80) decibel range.


Hope this helps.